Observation of mechanical Nyquist noise in a cryogenic gravitational-wave antenna
Journal Article
·
· Phys. Rev. Lett.; (United States)
A 680-kg, Weber-type, cylindrical, gravitational-wave detector has been operated at liquid helium temperature. The average vibrational energy in the lowest longitudinal mode at 1315.3 Hz was found to be consistent with the level of thermal noise at the antenna temperature. An effective noise temperature of 0.39 K for pulse excitation was measured. This is a factor of 20 below the lowest published values for room-temperature detectors.
- Research Organization:
- Department of Physics and W. W. Hansen Laboratories of Physics, Stanford University, Stanford, California 94305
- OSTI ID:
- 7317308
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 38:9; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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